| 71,6 → 71,8 |
|---|
| SET_FRAME_ADDRESS_ARCH(ptl3, PTL3_INDEX_ARCH(page), (__address)KA2PA(tgt)); \ |
| SET_FRAME_FLAGS_ARCH(ptl3, PTL3_INDEX_ARCH(page), PAGE_WRITE | PAGE_EXEC); \ |
| } |
| |
| |
| void page_arch_init(void) |
| { |
| __address cur; |
| 108,6 → 110,7 |
|---|
| } |
| } |
| |
| |
| /** Identity page mapper |
| * |
| * We need to map whole physical memory identically before the page subsystem |
| 161,6 → 164,7 |
|---|
| oldpage = page; |
| } |
| |
| |
| void page_fault(int n, istate_t *istate) |
| { |
| __address page; |
| 172,3 → 176,19 |
|---|
| panic("page fault\n"); |
| } |
| } |
| |
| |
| __address hw_map(__address physaddr, size_t size) |
| { |
| if (last_frame + ALIGN_UP(size, PAGE_SIZE) > KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH)) |
| panic("Unable to map physical memory %p (%d bytes)", physaddr, size) |
| |
| __address virtaddr = PA2KA(last_frame); |
| pfn_t i; |
| for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++) |
| page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE); |
| |
| last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE); |
| |
| return virtaddr; |
| } |